I have a UNIDIRECTIONAL ManyToMany Relationship between useres and usergroups. Users know their usergroups, usergroups don´t know their users. I want to create a query to get all Usergroups which are referenced by a User with name 'john' I tried: select ug from UserGroup as ug, User as u join u.userGroupList where u.name = 'john' | but got an empty result, what´s wrong? @Entity | public class User implements Serializable | { ... | public String getName() | @ManyToMany | public List<UserGroup> getUserGroupList() | | @Entity | public class UserGroup implements Serializable | { .. | } View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4022677#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...